RWR89SR200FSB12 Equivalent & Substitute Parts

Part Overview

The RWR89SR200FSB12 is a 200 mOhms ±1% 3W through-hole wirewound resistor manufactured by Vishay Dale, designed for military applications per MIL-PRF-39007. This axial-package component features moisture-resistant construction and operates across the temperature range of -55°C to 250°C. The part is currently active in production with 1089 units in stock. Substitute parts may be required due to inventory constraints, supply chain considerations, or specific failure rate requirements for mission-critical applications.

Substiute Parts

RWR89SR200FSB12

Vishay DaleIn Stock: 1131RWR89SR200FSB12 Datasheet

Current PartRFQ

RWR89SR200FRB12

Vishay DaleIn Stock: 953RWR89SR200FRB12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RWR89SR200FSB12 is determined by strict equivalence across the following critical parameters: resistance value (200 mOhms), tolerance (±1%), power rating (3W), composition (wirewound), package configuration (axial), operating temperature range (-55°C to 250°C), temperature coefficient (±650ppm/°C), and military series designation (MIL-PRF-39007, RWR89S). The substitute part RWR89SR200FRB12 meets all these requirements. The primary distinction between the main part and its substitute lies in the failure rate specification: the main part carries a failure rate of S (0.001%), while the substitute carries a failure rate of R (0.01%). Both parts maintain identical electrical and mechanical characteristics, physical dimensions (0.187" Dia x 0.560" L), and compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both RWR89SR200FSB12 and RWR89SR200FRB12 are active production parts from Vishay Dale with identical electrical and mechanical specifications. Selection between these parts should be based on failure rate requirements for the specific application. The RWR89SR200FSB12, with a failure rate of S (0.001%), is suitable for applications requiring the lowest failure rate specification. The RWR89SR200FRB12, with a failure rate of R (0.01%), provides an alternative when the higher failure rate is acceptable within system reliability budgets. Both parts maintain equivalent compliance status (RoHS non-compliant, REACH Affected, EAR99 classification) and are suitable for military applications under MIL-PRF-39007.

Frequently Asked Questions (FAQ)

Q: Can RWR89SR200FRB12 be used as a direct replacement for RWR89SR200FSB12?

A: Yes, RWR89SR200FRB12 is electrically and mechanically equivalent to RWR89SR200FSB12. Both parts share identical resistance (200 mOhms), tolerance (±1%), power rating (3W), temperature range (-55°C to 250°C), and physical dimensions. The difference lies in the failure rate specification: RWR89SR200FSB12 has a failure rate of S (0.001%), while RWR89SR200FRB12 has a failure rate of R (0.01%). Substitution is valid when the higher failure rate of the substitute part meets application requirements.

Q: What is the significance of the failure rate difference between these parts?

A: Failure rate is a reliability metric used in military and aerospace applications. The RWR89SR200FSB12 with failure rate S (0.001%) represents a lower failure rate specification compared to RWR89SR200FRB12 with failure rate R (0.01%). Selection depends on the system's reliability requirements and acceptable failure rate thresholds for the specific application.

Q: Are the physical dimensions identical between both parts?

A: Yes, both RWR89SR200FSB12 and RWR89SR200FRB12 have identical axial package dimensions of 0.187" Dia x 0.560" L (4.75mm x 14.22mm). They are mechanically interchangeable in PCB layouts and through-hole applications.

Q: Do both parts meet the same compliance and certification standards?

A: Yes, both parts are manufactured to MIL-PRF-39007 military specifications, carry the same RoHS non-compliant status, REACH Affected designation, EAR99 export classification, and HTSUS code 8533.21.0080. They are equivalent in regulatory and compliance standing.

Q: What packaging options are available for these parts?

A: Both RWR89SR200FSB12 and RWR89SR200FRB12 are supplied in bulk packaging as axial through-hole components. The supplier device package for both is axial configuration.